Research Article
A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks
@INPROCEEDINGS{10.4108/icst.mobimedia.2015.259022, author={Fang wei Li and Zhu xun Peng and Jiang Zhu and Qing Huang}, title={A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks}, proceedings={8th International Conference on Mobile Multimedia Communications}, publisher={EAI}, proceedings_a={MOBIMEDIA}, year={2015}, month={8}, keywords={cognitive networks surface spline interpolation location-awareness power control}, doi={10.4108/icst.mobimedia.2015.259022} }- Fang wei Li
Zhu xun Peng
Jiang Zhu
Qing Huang
Year: 2015
A New Transmit Power Control Scheme Based on Location-awareness in Cognitive Networks
MOBIMEDIA
ICST
DOI: 10.4108/icst.mobimedia.2015.259022
Abstract
To solve the problem that the traditional spectrum sensing can only obtain the limited information of primary user and the efficiency of spectrum usage is low, this paper proposes a spectrum situation scheme to obtain the interference distribution information of primary user in frequency and spatial domain. This scheme uses surface spline interpolation based on the information returned by a small amount of sensor nodes. On this basis, a new transmit power control mechanism based on location-awareness is proposed. This mechanism realizes the power control according to three kinds of position relations between primary user and secondary user. It can solve the concurrent communication interference problem. Simulation analysis shows that this mechanism can increase the capacity of cognitive network while maintaining a quality-of-service for primary user by limiting the interference generated by secondary user.
